<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>用户管理</el-breadcrumb-item>
			<el-breadcrumb-item>用户列表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图区 -->
		<el-card>
			<!-- 搜索与添加区 -->
			<el-row :gutter="20">
				<el-col :span="8">
					<el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
						<el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
					</el-input>
				</el-col>
				<el-col :span="4">
					<el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
				</el-col>
			</el-row>

			<!-- 用户列表区 -->
			<el-table :data="userList" border stripe>
				<el-table-column type="index"></el-table-column>
				<el-table-column prop="username" label="姓名"></el-table-column>
				<el-table-column prop="mobile" label="电话"></el-table-column>
				<el-table-column prop="email" label="邮箱"></el-table-column>
				<el-table-column prop="role_name" label="角色"></el-table-column>
				<el-table-column label="状态">
					<template slot-scope="scope">
						<el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
					</template>
				</el-table-column>
				<el-table-column label="操作" width="180px">
					<template slot-scope="scope">
						<!-- 修改按钮 -->
						<el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">
						</el-button>
						<!-- 删除按钮 -->
						<el-button type="danger" icon="el-icon-delete" size="mini"
							@click="removeUserById(scope.row.id)"></el-button>
						<!-- 分配角色按钮 -->
						<el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
							<el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
						</el-tooltip>

					</template>
				</el-table-column>
			</el-table>
			<!-- 分页区域 -->
			<el-pagination :current-Page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
				layout="total, sizes, prev, pager, next, jumper" :total="total" @size-change="handleSizeChange"
				@current-change="handleCurrentChange">
			</el-pagination>
		</el-card>

		<!-- 添加用户的对话框 -->
		<el-dialog :visible.sync="addDialogVisible" title="添加用户" width="50%" @close="addDialogClosed">
			<!-- 内容主题区 -->
			<el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="70px">
				<el-form-item label="用户名" prop="username">
					<el-input v-model="addForm.username"></el-input>
				</el-form-item>
				<el-form-item label="密码" prop="password">
					<el-input v-model="addForm.password"></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="addForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机" prop="mobile">
					<el-input v-model="addForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<!-- 对话框底部按钮区 -->
			<span slot="footer" class="dialog-footer">
				<el-button @click="addDialogVisible = false">取消</el-button>
				<el-button type="primary" @click="addUser">添加</el-button>
			</span>
		</el-dialog>
		<!-- 修改用户的对话框 -->
		<el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
			<el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px"
				class="demo-ruleForm">
				<el-form-item label="用户名">
					<el-input v-model="editForm.username" disabled></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="editForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机号" prop="mobile">
					<el-input v-model="editForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取消</el-button>
				<el-button type="primary" @click="editUserInfo">确定</el-button>
			</span>
		</el-dialog>
		
		<!-- 分配角色的对话框 -->
		<el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
			<div>
				<p>当前用户：{{userInfo.username}}</p>
				<p>当前角色：{{userInfo.role_name}}</p>
				<p>
					分配新角色：
					<el-select v-model="selectedRoleId" placeholder="请选择">
						<el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
					</el-select>
				</p>
			</div>
			<span slot="footer" class="dialog-footer">
				<el-button @click="setRoleDialogVisible = false">取消</el-button>
				<el-button type="primary" @click="saveRoleInfo">确定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			// 验证邮箱的验证规则
			const checkEmail = (rule, value, callback) => {
				// 验证邮箱的正则表达式
				const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
				if (regEmail.test(value)) {
					// 合法的邮箱
					return callback()
				}
				callback(new Error('请输入合法的邮箱'))
			}
			// 验证手机号的验证规则
			const checkMobile = (rule, value, callback) => {
				// 验证手机号的正则表达式
				const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
				if (regMobile.test(value)) {
					// 合法的手机号
					return callback()
				}
				callback(new Error('请输入合法的手机号'))
			}

			return {
				// 获取用户列表的参数对象
				queryInfo: {
					query: '',
					// 当前的页数
					pagenum: 1,
					// 当前每页显示多少数据
					pagesize: 5
				},
				userList: [],
				total: 0,
				// 控制添加用户对话框的显示和隐藏
				addDialogVisible: false,
				// 添加用户的表单数据
				addForm: {
					username: '',
					password: '',
					email: '',
					mobile: ''
				},
				// 添加表单的验证规则对象
				addFormRules: {
					username: [{
							required: true,
							message: '请输入用户名',
							trigger: 'blur'
						},
						{
							min: 3,
							max: 10,
							message: '用户名长度在3~10字符之间',
							trigger: 'blur'
						}
					],
					password: [{
							required: true,
							message: '请输入密码',
							trigger: 'blur'
						},
						{
							min: 6,
							max: 15,
							message: '密码长度在6~15字符之间',
							trigger: 'blur'
						}
					],
					email: [{
							required: true,
							message: '请输入邮箱',
							trigger: 'blur'
						},
						{
							validator: checkEmail,
							trigger: 'blur'
						}
					],
					mobile: [{
							required: true,
							message: '请输入手机号',
							trigger: 'blur'
						},
						{
							validator: checkMobile,
							trigger: 'blur'
						}
					]
				},
				// 控制修改用户对话框的显示与隐藏
				editDialogVisible: false,
				// 查寻到的用户信息对象
				editForm: {},
				// 修改表单的验证规则对象
				editFormRules: {
					email: [{
							required: true,
							message: '请输入邮箱',
							trigger: 'blur'
						},
						{
							validator: checkEmail,
							trigger: 'blur'
						}
					],
					mobile: [{
							required: true,
							message: '请输入手机号',
							trigger: 'blur'
						},
						{
							validator: checkMobile,
							trigger: 'blur'
						}
					]
				},
				// 控制分配角色对话框的显示与隐藏
				setRoleDialogVisible: false,
				// 需要被分配角色的用户信息
				userInfo: {},
				// 所有角色的数据列表
				rolesList: [],
				// 已选中的角色id值
				selectedRoleId: ''
			}
		},
		created() {
			this.getUserList()
		},
		methods: {
			async getUserList() {
				const {
					data: res
				} = await this.$http.get('users', {
					params: this.queryInfo
				})
				if (res.meta.status !== 200) {
					return this.$message.error('获取用户列表失败！')
				}
				this.userList = res.data.users
				this.total = res.data.total
			},
			// 监听pagesize的改变
			handleSizeChange(newSize) {
				this.queryInfo.pagesize = newSize
				this.getUserList()
			},
			// 监听页码值改变的事件
			handleCurrentChange(newPage) {
				this.queryInfo.pagenum = newPage
				this.getUserList()
			},
			// 监听switch开关的状态
			async userStateChanged(userinfo) {
				const {
					data: res
				} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
				if (res.meta.status !== 200) {
					userinfo.mg_state = !userinfo.mg_state
					return this.$message.error('更新用户状态失败！')
				}
				this.$message.success('更新用户状态成功！')
			},
			// 监听添加用户对话框的关闭事件
			addDialogClosed() {
				this.$refs.addFormRef.resetFields()
			},
			// 点击按钮，添加新用户
			addUser() {
				// 点击确定按钮，表单预校验
				this.$refs.addFormRef.validate(async valid => {
					if (!valid) return
					// 校验通过，可以发起添加用户的网络请求
					const {
						data: res
					} = await this.$http.post('users', this.addForm)

					if (res.meta.status !== 201) {
						this.$message.error('添加用户失败！')
					}
					this.$message.success('添加用户成功！')
					// 隐藏添加用户对话框
					this.addDialogVisible = false
					// 重新获取用户列表数据
					this.getUserList()
				})
			},
			// 点击按钮，展示编辑用户的对话框
			async showEditDialog(id) {
				const {
					data: res
				} = await this.$http.get('users/' + id)
				if (res.meta.status !== 200) {
					return this.$message.error('查询用户信息失败！')
				}
				this.editForm = res.data
				this.editDialogVisible = true
			},
			// 监听修改用户对话框的关闭事件
			editDialogClosed() {
				this.$refs.editFormRef.resetFields()
			},
			// 修改用户信息并提交
			editUserInfo() {
				this.$refs.editFormRef.validate(async valid => {
					if (!valid) return
					// 发起修改用户信息的数据请求
					const {
						data: res
					} = await this.$http.put('users/' + this.editForm.id, {
						email: this.editForm.email,
						mobile: this.editForm.mobile
					})
					if (res.meta.status !== 200) {
						return this.$message.error('更新用户信息失败！')
					}
					// 关闭对话框s
					this.editDialogVisible = false
					// 刷新数据列表
					this.getUserList()
					// 提示修改成功
					this.$message.success('更新用户信息成功！')
				})
			},
			// 根据id删除对应的用户信息
			async removeUserById(id) {
				// 询问用户是否删除
				const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning',
				}).catch( error => error )
				// 确认删除返回字符串“confirm”
				// 取消删除返回字符串“cancel”
				if(confirmResult !== 'confirm') {
					return this.$message.info('已经取消删除')
				}
				const {
					data: res
				} = await this.$http.delete('users/' + id)
				if (res.meta.status !== 200) {
					return this.$message.error('删除用户失败！')
				}
				this.$message.success('删除用户成功！')
				this.getUserList()
			},
			// 展示分配角色对话框
			async setRole(userInfo) {
				this.userInfo = userInfo
				
				// 在展示对话框之前获取所有角色列表
				const {
					data: res
				} = await this.$http.get('roles')
				if(res.meta.status !== 200){
					return this.$message.error('获取角色列表失败！')
				}
				this.rolesList = res.data
				
				this.setRoleDialogVisible = true
			},
			// 点击按钮分配角色
			async saveRoleInfo() {
				if(!this.selectedRoleId){
					return this.$message.error('请选择要分配的角色！')
				}
				const {
					data:res
				} = await this.$http.put(`users/${this.userInfo.id}/role`,{
					rid: this.selectedRoleId
				})
				if(res.meta.status !== 200) {
					return this.$message.error('更新角色失败！')
				}
				this.$message.success('更新角色成功！')
				this.getUserList()
				this.setRoleDialogVisible = false
			},
			// 监听分配角色对话框的关闭
			setRoleDialogClosed() {
				this.selectedRoleId = ''
				this.userInfo = ''
			}
		}
	}
</script>

<style lang="less" scoped>
</style>
